The people behind the 360 version say they aren't happy with how it was going:

NG: Aren’t you happy about the handheld version?

MS: Currently it’s not working – it’s not the game we wanted to make. In part it’s understandable, Atari want to expand the audience, but there are a lot of changes we haven’t been so happy with.

NG: What happened?

MS: We’re licensors instead of publisher. Being publisher on XBLA allowed us to direct the project, as we had final say and were doling out the cash.

RB: The developer is local, so we thought it was the perfect set-up – we could see them weekly. But we’d have two-hour meetings with a list of fixes where they’d say ‘yes’, write it down, and never change it.

MS: The one thing the handhelds are going to do very well is content sharing, though.